Cutting compound or lubricant



, 10 percent to ?atented at. d, 3.932

ALFRED n. DAHLBERG, or CHICAGO, rumors CUTTING COMPOUND 03 LUBRICANT NoDrawing.

4 An object of this invention is to provide an improved cutting oil orlubricant.

This and other objects, as will hereinafter appear, are accomplished bythis invention 5 which is fully set forth in the followingspecification:

Broadly, the invention consists in adding ammonium oleate (NILC to thecutting oil or other compound in amounts of one fifteen percent,depending on the kind of work to be cut, and the oil with which it ismixed. For average Work I find that a V mixture of two percent ofammonium oleate is very satisfactory. While larger amounts of theammonium oleate are sometimes desir-' able, the result is not enoughbetter to warrant the increased cost.

The cutting oil with which it-is mixed may be any of the mineral, fish,animal, vegetable,

or saponifiable oils, or combinations of these used for this purposewith screw machines,

turret lathes, and other machine tools where cutting metal can be donemuch faster and better by keeping the cutting tool flooded with asuitable cutting compound or oil. By

- the addition of ammonium oleate the cutting can be done better, muchmore rapidly, and

.with the generation of much less heat than where the same lubricant isused, but without the ammonium oleate. As a result the work,

the tool and the cutting oil, or compound, re-

mains much cooler. With these oils is in-- cluded also the so-calledsoluble oils or water compounds now used for cutting, grindin drawing,tapping, threading, etc. The

so uble oils include'sulphonated orphenolated cotton-seedoil, soya-beanoil,'rape-seed oil, olive oil, cocoanut oil, corn oil, etc.

40 The compounds described above, of which ammomum oleate forms a part,are particularly valuable for use in cutting tough metals or alloys,such as Monel metal, aluminum alloys, bronzes, brasses, etc. For lightscrew machine work, as low as one percent of ammonium oleate may be usedwith good results.

K The petroleum oils comprising crude oil,. and its derivatives, withwhich this substance is mixed may include such oils havin a viscosity ofto 300 at F. The lubricating Application filed December 9, 1931. SerialNo. 579,986.

term

PATENT: orrics qualities of these oils fongeneral lubricating purposesare also increased by the addition of ammonium oleate in the proportionsmentioned. Also the lubricating qualities of greases having a viscosityof 300 to solids at 100 F. are increased by adding like amounts ofammonium oleate.

While I have shown and described buta few embodiments of my invention,it is to be understood that it is capable of many modifications.Changes, therefore, in the construction and arrangement may be madewhich do not depart from the spirit and scope of the invention asdisclosed in the appended claims.

I claim: 1. A cutting compound consisting of a mixture ofoil andammonium oleate.

' 2. A cutting compound consisting of a mixture of oil and one tofifteen percent of ammonium oleate.

3. A cutting compound consisting ofa mixture of soluble oil and ammoniumoleate. ALFRED E. DAHLBERG. 75

